Results 71 to 80 of about 1,436 (263)

A Review of Stall Detection in Subsonic Axial Compressors

Machines
Stall events in axial compressor systems have been a limiting factor for efficiency of such systems and a source of safety concerns. The detection of the onset of stall, and in many cases the precursor of the onset of stall, have been of interest in the ...
Kellie N. Wilson, Golam Gause Jaman, Anish Thapa, Amirthavarshini Vivekananda, Mitchell Lowe, Zachary Grima, Marco P. Schoen   +6 more
doaj   +1 more source

A Study on the Stall Detection of an Axial Compressor through Pressure Analysis

Applied Sciences, 2017
In order to research the inherent working laws of compressors nearing stall state, a series of compressor experiments are conducted. With the help of fast Fourier transform, the amplitude–frequency characteristics of pressures at the compressor inlet ...
Haoying Chen, Fengyong Sun, Haibo Zhang, Wei Luo   +3 more
doaj   +1 more source

Rank‐based estimation of propensity score weights via subclassification

Canadian Journal of Statistics, EarlyView.
Abstract Propensity score (PS) weighting estimators are widely used for causal effect estimation and enjoy desirable theoretical properties, such as consistency and potential efficiency under correct model specification. However, their performance can degrade in practice due to sensitivity to PS model misspecification.
Linbo Wang, Yuexia Zhang, Thomas S. Richardson, Xiaohua Zhou   +3 more
wiley   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

From Disruption to Stabilization: A Functional Governance Perspective on the Renewable Energy Transition in Montenegro

Environmental Policy and Governance, EarlyView.
ABSTRACT As global climate ambitions intensify, the key challenge lies not in setting renewable energy targets but in designing governance systems that can translate them into lasting transformation. The transition management literature has advanced a valuable research agenda for initiating change through niche innovations and participatory arenas in ...
Alexander L. Q. Chen‐Florea, Igor Luksic, Bojana Boskovic   +2 more
wiley   +1 more source

Control of High-Load Compressor Stator Corner Flow by Blade Slotting

International Journal of Aerospace Engineering
Flow separation often occurs in the stator corner of a compressor, especially in a highly loaded compressor. Therefore, there are multiple methods for flow control, such as blade slotting, which uses the pressure difference between the pressure surface ...
Enbo Liu, Zhenggui Zhou, Huan Zheng
doaj   +1 more source

Flow Mechanism for Stall Margin Improvement via Axial Slot Casing Treatment on a Transonic Axial Compressor

Journal of Applied Fluid Mechanics, 2017
Axial slot CTs were designed and applied on Rotor 67 to understand the physical mechanisms responsible for the improvement of the stall margin. Unsteady Reynolds-averaged Navier-Stokes was applied in addition to steady Reynolds-averaged Navier-Stokes to ...
H. Kuang, S. Wuli Chu, H. Zhang, S. Ma
doaj   +2 more sources

Performance Improvement of a High Loading Centrifugal Compressor with Vaned Diffuser by Hub Contour Optimization

Aerospace
High-pressure ratio centrifugal compressors’ diffusers face challenges from high-velocity, non-uniform flow at the impeller outlet, decreasing efficiency and stall margin.
Yunfeng Wu, Qingkuo Li, Hang Yuan, Ziliang Li, Shiji Zhou, Ge Han, Xingen Lu   +6 more
doaj   +1 more source

Design of HAWT Rotor for Non‐Uniform Inflow Conditions: A Theoretical and Experimental Approach for Shear Flow

Energy Science &Engineering, EarlyView.
This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak, Piotr Strzelczyk, Taeseong Kim   +2 more
wiley   +1 more source

When Rare Is Not Small: Amyotrophic Lateral Sclerosis Initiatives and Therapy

Exploration, EarlyView.
In the precision‐medicine era, rare diseases must not be sidelined in translational infrastructure. The Mr. Cai Lei—led “Ice‐Breaking Team” turns an amyotrophic lateral sclerosis patient community into a sustainable ecosystem, realigning philanthropy, data, and research and development to reshape rare‐disease pipelines and guide precision therapies ...
Yang Liu, Xue Xia, Yingfang Chen, Haoying Yang, Xiaochen Chen, Lei Cai, Bingyang Shi   +6 more
wiley   +1 more source